JPS57103817A - Rough surface polypropylene film stretched in biaxial manner, its manufacture and condenser film made of said polypropylene film - Google Patents

Rough surface polypropylene film stretched in biaxial manner, its manufacture and condenser film made of said polypropylene film

Info

Publication number
JPS57103817A
JPS57103817A JP14583880A JP14583880A JPS57103817A JP S57103817 A JPS57103817 A JP S57103817A JP 14583880 A JP14583880 A JP 14583880A JP 14583880 A JP14583880 A JP 14583880A JP S57103817 A JPS57103817 A JP S57103817A
Authority
JP
Japan
Prior art keywords
zones
polypropylene film
film
manufacture
rough surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14583880A
Other languages
Japanese (ja)
Other versions
JPH0132764B2 (en
Inventor
Kurasu Giyuntaa
Henzeru Harutomuuto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of JPS57103817A publication Critical patent/JPS57103817A/en
Publication of JPH0132764B2 publication Critical patent/JPH0132764B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/018—Dielectrics
    • H01G4/06—Solid dielectrics
    • H01G4/14—Organic dielectrics
    • H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/018—Dielectrics
    • H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
    • H01G4/22—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
    • Y10T428/24537—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
    • Y10T428/24545—Containing metal or metal compound
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31—Surface property or characteristic of web, sheet or block
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31692—Next to addition polymer from unsaturated monomers

Abstract

Disclosed is a film for use in the field of electrical insulation comprising a biaxially stretched rough polypropylene film comprising a plurality of first zones of high roughness, the first zones having a relatively high number of alpha -crystallites; and a plurality of second zones of substantially lesser roughness, the second zones having a substantially lesser number of alpha -crystallites than the first zones, the first zones being adjacent to the second zones and the adjacent first and second zones forming fine channels between each other. Also disclosed is a method for producing this film.
JP14583880A 1979-10-19 1980-10-20 Rough surface polypropylene film stretched in biaxial manner, its manufacture and condenser film made of said polypropylene film Granted JPS57103817A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2942298A DE2942298C2 (en) 1979-10-19 1979-10-19 Process for the production of a rough polypropylene electrical insulation film

Publications (2)

Publication Number Publication Date
JPS57103817A true JPS57103817A (en) 1982-06-28
JPH0132764B2 JPH0132764B2 (en) 1989-07-10

Family

ID=6083867

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14583880A Granted JPS57103817A (en) 1979-10-19 1980-10-20 Rough surface polypropylene film stretched in biaxial manner, its manufacture and condenser film made of said polypropylene film

Country Status (6)

Country Link
US (1) US4367511A (en)
EP (1) EP0029119B1 (en)
JP (1) JPS57103817A (en)
AT (1) ATE18157T1 (en)
DE (2) DE2942298C2 (en)
FI (1) FI75946C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60223110A (en) * 1984-04-20 1985-11-07 本州製紙株式会社 High pressure oil-immersed metallized polypropylene film capacitor
JP2008005790A (en) * 2006-06-30 2008-01-17 Seiwa:Kk Structure of hot-house lining film, and spacer member

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536204A1 (en) * 1982-11-16 1984-05-18 Europ Composants Electron Impregnated electrical capacitor
JPS59129123A (en) * 1983-01-14 1984-07-25 Tsukasa Kasei Kogyo Kk Polypropylene band and its manufacture
JPS6098613A (en) * 1983-11-04 1985-06-01 東レ株式会社 Immersed condenser
JPH0656826B2 (en) * 1984-06-04 1994-07-27 東レ株式会社 Capacitor
DE3538701A1 (en) * 1985-10-31 1987-05-07 Hoechst Ag METHOD FOR PRODUCING AN ELECTRIC CAPACITOR WITH A LONG LIFETIME
DE3540214A1 (en) * 1985-11-13 1987-05-14 Hoechst Ag COEXTRUDED, BIAXIAL ORIENTED MULTILAYER FILM
NL8600852A (en) * 1986-04-03 1987-11-02 Stamicarbon THIN FILMS OF HIGH MOLECULAR POLYPROPENE.
JPS62242517A (en) * 1986-04-14 1987-10-23 Kureha Chem Ind Co Ltd Biaxially oriented poly-para-phenylene sulfide film
DE3620219A1 (en) * 1986-06-16 1987-12-17 Hoechst Ag METHOD FOR PRODUCING BIAXIAL STRETCHED FILMS AND DEVICE FOR IMPLEMENTING THE METHOD
DE3631232A1 (en) * 1986-09-13 1988-03-24 Hoechst Ag MULTILAYER FILM AS PARTITION FILM FOR PRODUCING DECORATIVE LAMINATE PANELS
GB2206524B (en) * 1987-07-08 1990-03-07 Courtaulds Films & Packaging Voided polypropylene films
US5108814A (en) * 1987-09-14 1992-04-28 Tredegar Industries, Inc. Embossed oriented film
DE3737922A1 (en) * 1987-11-07 1989-05-18 Basf Ag COMPOSITE MATERIAL FROM HIGH-TEMPERATURE-RESISTANT POLYMERS AND DIRECTLY APPLIED METAL LAYERS
DE3931299C2 (en) * 1989-09-20 1998-07-02 Targor Gmbh Plastic molding with a grained surface and improved scratch resistance
JP2846420B2 (en) * 1990-06-29 1999-01-13 三菱製紙株式会社 Photographic paper support
US5401563A (en) * 1990-07-27 1995-03-28 Nippon Petrochemicals Company, Limited Tier sheets
FR2671659B1 (en) * 1991-01-10 1994-06-17 Bollore Technologies METALLIC POLYPROPYLENE FILM FOR CAPACITORS, AND CAPACITORS THEREOF.
US5312671A (en) * 1991-05-21 1994-05-17 Arkwright Incorporated Antistatic drafting films
BE1008385A3 (en) * 1994-05-30 1996-04-02 Tale Consultants Ltd METHOD FOR MANUFACTURING LAYERED GLASS AND METHOD FOR MANUFACTURING A SHEET OF POLYVINYLBUTYRAL USED THEREIN
EP0934155A1 (en) * 1996-04-10 1999-08-11 Plymouth Rubber Company Advanced sound reduction tape

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072288B (en) * 1959-12-31
DE1113256B (en) * 1960-07-06 1961-08-31 Felten & Guilleaume Carlswerk Electric high voltage cable, the wound dielectric of which is filled with a gaseous or liquid agent
US3223764A (en) * 1961-11-28 1965-12-14 Nat Distillers Chem Corp Process for production of biaxially oriented polypropylene film
DE1275178B (en) * 1963-11-27 1968-08-14 Bayer Ag Polycarbonate insulating foils for high-voltage oil cables
DE1764548C3 (en) * 1968-06-25 1978-12-14 Siemens Ag, 1000 Berlin U. 8000 Muenchen Process for the production of an electrical film capacitor
US3585467A (en) * 1969-08-11 1971-06-15 Spraque Electric Co Capacitor with microstippled dielectric
US3754311A (en) * 1970-03-05 1973-08-28 C Rayburn Wound film capacitor and method of winding same about its lead wires
GB1345748A (en) * 1970-10-09 1974-02-06 Du Pont Surface-patterned surface-activated polymer film
JPS5416723B2 (en) * 1971-10-27 1979-06-25
US3746953A (en) * 1972-05-19 1973-07-17 Mc Graw Edison Co Electrical capacitor
CH551081A (en) * 1972-05-31 1974-06-28 Kapsch Telephon Telegraph WINDING CAPACITOR.
US3772578A (en) * 1972-09-11 1973-11-13 Gen Electric Impregnated capacitor
US3857073A (en) * 1973-04-10 1974-12-24 Shizuki Electrical Mfg Co Ltd Capacitor with polypropylene dielectric
GB1468511A (en) * 1973-06-06 1977-03-30 Johnson Philllips Ltd Capacitor manufacture
US3900775A (en) * 1974-06-24 1975-08-19 Matsushita Electric Ind Co Ltd Metallized film capacitor
US4138520A (en) * 1974-11-29 1979-02-06 Mitsubishi Rayon Co., Ltd. Translucent polypropylene film and process for producing the same
US4287249A (en) * 1975-02-28 1981-09-01 General Electric Company Textured surface polypropylene film
DE2660907C2 (en) * 1975-02-28 1989-09-07 General Electric Co., Schenectady, N.Y., Us
US4185148A (en) * 1976-05-17 1980-01-22 Mitsubishi Rayon Company Limited Process for producing the polypropylene film for electrical appliances
JPS5337774A (en) * 1976-09-20 1978-04-07 Toray Industries Method of producing roughened polypropylene film
JPS6040383B2 (en) * 1978-07-05 1985-09-10 東レ株式会社 Polypropylene composite biaxially stretched film
US4228481A (en) * 1978-10-19 1980-10-14 General Electric Company Capacitor with embossed foil electrode
US4243708A (en) * 1979-04-16 1981-01-06 General Electric Company Metallized textured surface polypropylene film

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60223110A (en) * 1984-04-20 1985-11-07 本州製紙株式会社 High pressure oil-immersed metallized polypropylene film capacitor
JP2008005790A (en) * 2006-06-30 2008-01-17 Seiwa:Kk Structure of hot-house lining film, and spacer member

Also Published As

Publication number Publication date
DE2942298C2 (en) 1985-06-13
FI75946C (en) 1988-08-08
JPH0132764B2 (en) 1989-07-10
EP0029119A2 (en) 1981-05-27
DE2942298A1 (en) 1981-04-30
FI803266L (en) 1981-04-20
FI75946B (en) 1988-04-29
EP0029119A3 (en) 1984-05-02
ATE18157T1 (en) 1986-03-15
US4367511A (en) 1983-01-04
DE3071451D1 (en) 1986-04-03
EP0029119B1 (en) 1986-02-26

Similar Documents

Publication Publication Date Title
JPS57103817A (en) Rough surface polypropylene film stretched in biaxial manner, its manufacture and condenser film made of said polypropylene film
DE3478911D1 (en) Process for the manufacture of equally biaxially oriented film
EP0242165A3 (en) Biaxially stretched polyparaphenylene sulfide film or sheet and process for producing the same
DE3068792D1 (en) Method and apparatus for the manufacture of biaxially orientation-stretched plastic film and film produced thereby
DE3563004D1 (en) Shaped pvc article
CA975516A (en) Method of manufacturing biaxially stretched shrink foils and an apparatus for carrying the method into effect
FR2282985A1 (en) MANUFACTURING PROCESS OF CALENDER SHEETS AND FILMS, IN THERMOPLASTIC RESINS
KR860003289A (en) Manufacturing method of laminated film
JPS5294381A (en) Biaxially stretched polypropylene composite film
IE812230L (en) Producing embossed film.
GB2008027B (en) Biaxially drawn polyhexamethylene adipamide film and process for the production thereof
DE3070262D1 (en) Biaxially stretched polyester film, provided with an antistatic coating, and method for the manufacture of this film
JPS52138537A (en) Process for manufacturing compounds having no shrinkage and expansion in curing
JPS5314753A (en) Polyethylene terephthalate compound and its producing method
DE3371139D1 (en) Dielectric film and process for producing same
JPS5343770A (en) Biaxially stretching polyhexamethylene adipamid film and method of producing same
JPS5345376A (en) Method of producing high molecular polyolefin resin sheet or film
JPS52127967A (en) Method of producing formed article of polyethylene terephthalate film
JPS5354271A (en) Method of producing biaxially stretching polypropylene film
BR7706648A (en) PROCESS FOR THE PRODUCTION OF MULTIPLE LAYERS ORIENTED THERMOPLASTIC FILMS OR SHEETS
JPS5651329A (en) Manufacture of tempered polypropylene film
JPS52108466A (en) Method of manufacturing poly ethylene terephthalate film
JPS5221087A (en) Embossed films
JPS5232980A (en) Embossed film
JPS5462262A (en) Method of forming biaxially stretched bottle made of polyethylene terephthalate